tests: Add gem_close_race

The intention is to exercise #70784. Yet the first challenge is make the
test suite happy.

1 files changed, 148 insertions, 0 deletions

diff --git a/tests/gem_close_race.c b/tests/gem_close_race.c
new file mode 100644
index 00000000..cceae366
--- /dev/null
+++ b/tests/gem_close_race.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+
+#define OBJECT_SIZE 1024*1024*4
+
+#define COPY_BLT_CMD		(2<<29|0x53<<22|0x6)
+#define BLT_WRITE_ALPHA		(1<<21)
+#define BLT_WRITE_RGB		(1<<20)
+
+static void selfcopy(int fd, uint32_t handle)
+{
+	struct drm_i915_gem_relocation_entry reloc[2];
+	struct drm_i915_gem_exec_object2 gem_exec[2];
+	struct drm_i915_gem_execbuffer2 execbuf;
+	uint32_t buf[10];
+	uint32_t batch;
+
+	memset(reloc, 0, sizeof(reloc));
+	memset(gem_exec, 0, sizeof(gem_exec));
+	memset(&execbuf, 0, sizeof(execbuf));
+
+	buf[0] = COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB;
+	buf[1] = 0xcc << 16 | 1 << 25 | 1 << 24 | (4*1024);
+	buf[2] = 0;
+	buf[3] = 1024 << 16 | 1024;
+	buf[4] = 0;
+	reloc[0].offset = 4 * sizeof(uint32_t);
+	reloc[0].delta = 0;
+	reloc[0].target_handle = handle;
+	reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
+	reloc[0].write_domain = I915_GEM_DOMAIN_RENDER;
+	reloc[0].presumed_offset = 0;
+
+	buf[5] = 0;
+	buf[6] = 4*1024;
+	buf[7] = 0;
+	reloc[1].offset = 7 * sizeof(uint32_t);
+	reloc[1].delta = 0;
+	reloc[1].target_handle = handle;
+	reloc[1].read_domains = I915_GEM_DOMAIN_RENDER;
+	reloc[1].write_domain = 0;
+	reloc[1].presumed_offset = 0;
+
+	buf[8] = MI_BATCH_BUFFER_END;
+	buf[9] = 0;
+
+	gem_exec[0].handle = handle;
+
+	batch = gem_create(fd, 4096);
+
+	gem_write(fd, batch, 0, buf, sizeof(buf));
+	gem_exec[1].handle = batch;
+	gem_exec[1].relocation_count = 2;
+	gem_exec[1].relocs_ptr = (uintptr_t)reloc;
+
+	execbuf.buffers_ptr = (uintptr_t)&gem_exec;
+	execbuf.buffer_count = 2;
+	execbuf.batch_len = sizeof(buf);
+	if (HAS_BLT_RING(intel_get_drm_devid(fd)))
+		execbuf.flags |= I915_EXEC_BLT;
+
+	gem_execbuf(fd, &execbuf);
+}
+
+static int open_drm(void)
+{
+	char name[80];
+
+	sprintf(name, "/dev/dri/card%d", drm_get_card());
+	return open(name, O_RDWR);
+}
+
+static uint32_t load(int fd)
+{
+	uint32_t handle;
+
+	handle = gem_create(fd, OBJECT_SIZE);
+	if (handle == 0)
+		return 0;
+
+	selfcopy(fd, handle);
+	return handle;
+}
+
+static void run(int child)
+{
+	int fd;
+	uint32_t handle;
+
+	fd = open_drm();
+	igt_assert(fd != -1);
+
+	handle = load(fd);
+	if (child & 1)
+		gem_read(fd, handle, 0, &handle, sizeof(handle));
+}
+
+int main(int argc, char *argv[])
+{
+	igt_skip_on_simulation();
+	igt_subtest_init(argc, argv);
+
+	igt_subtest("gem-close-race")
+		igt_fork(child, 100)
+			run(child);
+
+	igt_waitchildren();
+	igt_exit();
+}